Deecht



2 Sheets-Sheet `1.

(No Model.)

A. A, W. VAN REED?.

ROTARY ENGINE.

Patented sept. 16, 188A.

N. PETERS. Pmabmogmpher. wnshmgm". D. c.

(No Model.)

' 2 Sheets-Sheet 2. A. A. W. VAN REEDE.

ROTARY ENGINE.

Patented sept. 16, 1884.

INVENTOR .drfwwnfhony Wzfm 775m Reed@ By his .dttorlwy We M N- PTERSFhMD-Lldngnphln Waihrlglon. D C

Prion.

ADRIANUS ANTHONY WILTON VAN REEDE, OF PAPENDRECHT, NEAR DOR- DRECHT,HOLLAND.

ROTARYl ENGINE.

SPECIFICATIONforming part of Letters Patent No.`305,358, dated September16, 1884.

Application filed December 20, 1883. (No model.) Patented iu EnglandNovember 2:2, 1853, No. 5,487; in France November 26, 1883,

No. 158,786; iu Belgium November 26, 1883, No. 63,348; in Germany byprovisional protection November 28, 1883; in Arustria January 26, 1884,No. 44,200, and in Denmark March 25, 1884, No. 2,541. l

To all whom it may concern:

Beit known that I, ADRIANUs ANTHONY WIL'roN VAN Renna, a subject of theKing of Holland, residing at Papendrecht, near Dordrecht, Holland, haveinvented certain new and useful Improvements in Rotary Engines, v(forwhich I have obtained Letters Patent in Great Britain, No. 5,487, datedNovember 22,` 1883;` in France, No. 158,786, dated November 26, 1883; inBelgium, No. 63,348,

dated November 26, 1883, in Austria, No. n

44,200, dated January 26, 1884, and in Denmark, No. 2,541, dated March25, 1884, and have applied for LettersV Patent in Germany by anapplication dated November 28 1883,) of which the following is aspecification.

This invention has for its object improvements in rotary engines. Theengine in its simplest form consists of an axis upon which is mountedaneccentrically-cylindrical block. Ihe block serves as a piston, and iscontained in a cylinder or working-chamber. The width of theworking-chamber in` one direction is the same as the diameter of thecylindrical block, and this ts it steam-tight. y In the direction oftheheight the chamber is elongated to such an extent as to enable the aXisand eccentric block to rotate, at the same time imparting a to-and-frorectilinear movement to the chamber and to the casting in which thechamber is formed, this part being mounted on horizontal guides whichpermit the movement. The working-chamber is closedat the ends. At oneend'it works against a vertical abutment forming part of the frame, andat the other end it receives a stationary coverplate, which constitutesa valve-face, and is held up against the end of the working-i chamber bythe steam-pressure `in a valve chest or chamber on the farther side.l`Steam is admitted to the workingchamber .alternately at the top andbottom by a sliding valve upon the cover, to which a vertical movementis imparted by another eccentric upon the shaft. The valve eccentric is`received `into a cavity in `the valve similar in form to theworking-chamber. This-valve-alternately uncovers ports in the end coverleading to the top and bottom of the workingchamber and allows steam toenter; also, covering these ports and exhaust-ports formed in the cover,it allows the steam to pass out from the working-chamber. The pressureof the steam thus applied imparts a rotary motion to the axis. Theexhaust-passages in the cover lead the steam intochannels passinglongitudinally through-the casting in which the working-chamber isformed. The steam travlerses these channels and passes out by ports inthe cover-plate at the farther end of the working-chamber. l If theengine be singlethe steam iseither received into the condenser or isallowed to escape; butusually I make these engines compound, and thenthe steam from the first working-chamber is receivedinto aseoondvalve-chest containing a slide-valve simi- 4 lar to that alreadydescribed and belonging to another working-chamber,in all respectssimilar to the first, but of larger dimensions. The steam expands intothe second working-chamber and operates against the eccentriccylindricalblock which this chamber contains.`

From the second chamber the steam emerges into a receiver in connectionwith a condenser, and provided with air-pumps which are operated by-aneccentric upon the main shaft. `In order to admit of the engine beingreversed, the eccentrics actuating the valves are not fixed upon theshaft itself, but upon a sleeve surrounding the shaft, and the reversalis obtained by turning these sleeves with the eccentrics partly roundupon the shaft. Thisis effected in each case in the following manner:Outside the sleeve there is a loose collar, and a pin within this collarprojects through a slot cut longitudinally in the sleeve and entersauother inclined slot in the shaft. The sleeve can be movedlongitudinally upon the collar by a fork embracing its neck. The fork`forms part of a nut, which is held in guides within the valve-box, andprevented from turning,

butfree to traverse longitudinally. This nut another beveled pinionengaging with a corresponding pinion upon ahorizontal shaft can' ryingthe hand-Wheel, by turning which the engine is reversed. By turning thiswheel the collar is drawn along the sleeve, and its pin, passing throughthe two slots, causes the sleeve to be turned relatively to the axis. Inorder that my said invention may be most fully understood and readilycarried into effect, I will proceed to,describc the drawings hereuntoannexed.

In the drawings, Figure l is a vertical and longitudinal section of acompound rotary engine constructed in accordance with my invention.same. Fig. 8 is an end view, partly in section. Figs. 4, 5, 6, 7, and Sshow separate parts of the engine.

A is the main frame.

A A are the abutnients, forming parts of the frame by which the castingscontaining the working-chambers are supported.

B is the main shaft. It is carried in bearings upon the frame.

C G2 are the castings. In these the working chambers or cylinders C* C*are formed.

D D2 are the cover-plates. In them ports and passages are formed. Thecover-plates and abutments have upon them guides, on which the castingsC C2 travel. The casting in which the smaller cylinder C* is formed isclosed at one end by the standard A* upon the frame, and at the otherend by a plate, D', similar in all respects to D2, but of smallerdimensions.

E E2 are cylindrical blocks fixed eccentrically upon the main shaft B,and at right angles the one to the other.

Fig. 4L is an elevation of the casting C with the block E within it.Fig. 5 shows an elevation of the cover-plate D, in contact with whichthe casting C moves to and fro. Fig. 6 is a view similar to Fig. 4, butrepresenting the casting C2. Fig. 7 represents the coverplate D2,against which the casting C2 works.

F is the valve of the smaller or high-pressure working-chamber. It ismoved to and fro in guides in a vertical direction by an eccentric, G',upon the main axis. The cavity into which the eccentric is received maybe similar to that of the working-chamber itself-t'. e., such as toadmit of the shaft with the eccentric revolving within the cavity, andthereby imparting to the valve the requisite movement up and down in itsguides.

F2 is the larger valve, similar in all respects to the smaller.

The high-pressure steam from the boiler is admitted to the engine at II.It enters the valve-casing K, and passes from thence into the smallerworking-chamber by the ports L and L2 as these are alternately opened bythe movement of the valve F. While steam is thus admitted at the top bythe port Il above the eccentric-block F, steam is able to pass out fromthe lower part of the working-cham- Fig. 2 is a horizontal section ofthe ber by the port L2 into the cavity of the valve, and thence to thepassage M2, formed in the thickness of the cover. The passage M2 leadsto the openings N2 N 2 in the cover. Similarly the passage M leads toopenings N N. The steam passes from one side to the other of the castingC by passages O O, formed` in it, and so it reaches the secondvalve-chest,P. From thence it is permitted by the valve F2 to pass intothe larger working chamber C* alternately on the upper and under side ofthe cylindrical block. The steam passes out from this chamber in themanner already described in respect tothe smaller working-chamber, andreaches the condenser of the engine, which is not fully represented inthe drawings.

Q, Q are the air-pumps. Their pistons are connected by links with theeccentric R upon the main shaft. S S are the pump-valves. These partsare clearly seen in Figs. 3 and 8.

T is a hand-wheel for reversing the engine. It is upon the horizontalaxis T', on which are two beveled pinions, T2 T2, each of which engageswiththe corresponding pinion upon a vertical axis. These two verticalaxes U U2 serve to convey the movement of thel handwheel to theeccentrics which actuate the valves. pressure valve, and the other tothe low-pressure. Each axis at its lower end passes through astufing-box into the valve-box, and has upon it a beveled pinion, Ui,engaging with the wheel V upon the hollow screw V.

V is a nut, which is moved by this screw. The nut traverses in thedirection lengthwise of the axis, being prevented from'rotating byguides. The projection W upon the nut engages with the collar X upon thesleeve Y. In this sleeve there is a projection, Y, passing throughstraight slots in the sleeve Z, upon which the eccentric is fixed, andentering an inclined slot cut in the shaft. Consequently thelongitudinal movement ofthe nut causes the rotation of the eccentricrelatively to the shaft, and this so changes the action of the valve asto affect the reversal of the eng In order to prevent the steam leakingby the eccentric-blocks E F2, one side of each of the working-chambersis formed by a movable piston-like piece, c, and this can be keptconstantly in contact with the eccentric-block by the admission of steambehind it through the passage c.

For starting the engine, it is found desirable to provide a compensationfor the pressure of the steam upon the cover-plates D D2. This iseffected by forming all around the casting C C2 channels 0X, to whichthe steam can be admitted by a passage, cxx, and thus a partialequilibrium is obtained, the` pressure of the steam then acting uponboth sides of the covers of the working-chambers- There are similarchambers cX facing the abutments A. Then the engine is started, thesteam ad- K mitted to the cylinders by the valves provides One of themcorresponds to the high- IIO a partial counterpoise, and the admissionof steam by the passage cXX is then no longer necessary.

Having thus described the nature of my said invention and the manner ofperforming the same, I would have it understood that I clairnl. Thecombination of the cylindrical block, set eceentrically on the mainshaft, and the Working-chamber, to which the block fits in twodimensions, and which has a toand-fro rectilinear movement inipartedtoit by the rotation of the axis and block, substantially as described.

2. The combination of the valve-chamber, the Working-chamber7 to which.to-and-fro rec- 1 tillnear movement 1s lmparted, and the coverconstituting the valve-face, and held in steanltight contact With theend of the Workingchamber by the pressure of the steam in thevalve-chamber, substantially as and for the purpose hereinbefore setforth.

3. The means for reversing the engine by producing the rotation of thevalve-eccentric upon the shaft by a screw and nut actuating a slidingcollar with pins upon it entering grooves in the sleeve of the eccentricand in the shaft, substantially as described.

ADRIANUS ANTHONY WILTON VAN REEDE.

Witnesses:

WM. l?. ATWELL, P. GROENEDAAR.

